A previously healthy 34-year-old man presented with severe chest pain, with cough
and dyspnea lasting for 2 days. The chest pain had begun after a dinner and the consumption
of alcohol, but he denied the ingestion of any foreign body. On physical examination,
no palpable mass was observed on the neck, and his lungs were clear on auscultation.
His laboratory results at presentation showed significant increases of white blood
cells (23.02 × 109 /L), with 90 % neutrophils, and C-reactive protein level (180 mg/L).
Other tests including serology for cytomegalovirus (CMV) and tuberculosis were within
normal limits. A contrast-enhanced computed tomography (CT) scan revealed wall thickening
and a low density accumulation in the upper and middle esophagus ([Fig. 1]). Endoscopic examination revealed a longitudinal bulge at 20–30 cm distal to the
incisors ([Fig. 2]). The patient was prescribed ciprofloxacin 400 mg intravenously; however, he complained
of a fever and chills 2 days later. A three-dimensional reconstruction technique was
used to facilitate diagnosis and characterize the esophageal lesion ([Fig. 3]). Notably, repeat endoscopy showed pus flowing from a fistula at the upper part
of the bulge, consistent with a diagnosis of esophageal abscess ([Fig. 4a]).
Fig. 1 Computed tomography scan showing esophageal wall thickening and a low density accumulation.
Fig. 2 Endoscopic view showing a longitudinal bulge in the esophagus.
Fig. 3 A three-dimensional reconstruction showing the intramural esophageal abscess.
Fig. 4 Endoscopic views showing: a pus flowing from a fistula at the upper part of the esophageal bulge; b the endoscopic incision; c healing of the incision 1 month later.
With the patient under general anesthesia, an endoscopic incision was performed from
the fistula to the end of the bulge using an insulated-tip knife ([Fig. 4b]; [Video 1]). This endoscopic mucosal incision released a large amount of pus and the esophageal
wall was intact. Postoperatively, both the patient’s condition and laboratory tests
immediately improved. The intramural esophageal abscess was no longer visible on endoscopy
or CT examination 3 days postoperatively. On further endoscopic examination, 1 month
later, the esophageal longitudinal ulcer from the incision was found to have healed
([Fig. 4c]).
Video 1 Treatment of an intramural esophageal abscess by endoscopic mucosal incision.
Spontaneous esophageal abscess remains a rare event caused by the longitudinal separation
of the esophageal mucosal and submucosal layers [1]. Prompt diagnosis and early therapy are needed to prevent death and prolonged serious
illness ([Fig. 5]); the key to the diagnosis is an awareness of its frequent atypical presentations.
In clinical settings, mucosal injury due to either iatrogenic etiology or foreign
body ingestion can often help to identify an intramural esophageal abscess [2]; however, in a healthy and strong young man with no underlying etiology, the diagnosis
may be challenging. Three-dimensional reconstruction provided valuable help with the
diagnosis in this case and the endoscopic finding of pus from the fistula was highly
suggestive of an esophageal abscess. Finally, endoscopic mucosal incision is the treatment
of choice for an intramural esophageal abscess.
Fig. 5 Schematic diagram of the possible outcomes of an intramural esophageal abscess showing:
a incision of the mucosa, leading to the release of pus from the abscess, and eventual
healing of the ulcer; b possible esophageal perforation and fistula formation, when the intramural esophageal
abscess extends into the surrounding tissues, that might result from a delay in diagnosis
and intervention.
Endoscopy_UCTN_Code_CCL_1AB_2AC_3AH
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